package Stream;

import java.util.Arrays;

public class kebiancanshu4 {
    public static void main(String[] args) {
        sum();
        sum(1);
        sum(1,2,3);

    }

    public static void sum(int...arr){
        System.out.println(arr.length);
        System.out.print(Arrays.toString(arr));
        System.out.println("……………………………………");
    }
}
